A visitor (C) poses for a photo in a Mclaren car on display at the China International Exhibition Center new venue during the “Auto China 2014” Beijing International Automotive Exhibition in Beijing on April 20, 2014. Leading automakers are gathering in Beijing for the kickoff of China's biggest car show, but lackluster growth and environmental restrictions in the world's largest car market have thrown uncertainty into the mix. More than 1,100 vehicles are being showcased at the auto show, which opens to the public on April 21. (Photo by AFP Photo)

A Volkswagen XL1 hybrid car is displayed at Auto China 2014 in Beijing, April 20, 2014. Volkswagen will keep expanding Chinese operations and start selling battery-powered cars in the biggest auto market as the country rewards electric-vehicle buyers to tackle air pollution. (Photo by Jason Lee/Reuters)

A Lincoln MKX SUV concept car is displayed at Auto China 2014 in Beijing April 20, 2014. Ford Motor Co's premium brand Lincoln may be late to China's luxury boom, but its top executives say the upscale car market still has plenty of steam left for growth to make its debut later this year worthwhile. (Photo by Jason Lee/Reuters)

Visitors gather to look at the cars on display during the “Auto China 2014” Beijing International Automotive Exhibition in Beijing on April 21, 2014. (Photo by AFP Photo)

A visitor poses for a photo in a Toyota Camatte car at Auto China 2014 in Beijing, April 20, 2014. Toyota aims to double auto sales in China to around 2 million vehicles a year in the future, a senior executive said on Sunday, as the top global car maker plays catch up to rivals, such as Volkswagen, in the world's largest auto market. (Photo by Jason Lee/Reuters)

A model poses by a Fiat car on display at the China International Exhibition Center new venue during the “Auto China 2014” Beijing International Automotive Exhibition in Beijing on April 20, 2014. (Photo by AFP Photo)

A BMW Vision Future Luxury concept car is displayed during its world premiere ceremony at Auto China 2014 in Beijing April 20, 2014. Germany's BMW is getting closer to deciding whether it will build a new factory, its board member Ian Robertson said on Sunday, as the luxury carmaker expands capacity to meet demand in key markets. (Photo by Jason Lee/Reuters)

A Nissan Zero Emission car on display at the China International Exhibition Center new venue during the “Auto China 2014” Beijing International Automotive Exhibition in Beijing on April 20, 2014. (Photo by AFP Photo)

Visitors check out a Volvo car on display at the China International Exhibition Center new venue during the “Auto China 2014” Beijing International Automotive Exhibition in Beijing on April 20, 2014. (Photo by AFP Photo)

This picture taken on April 19, 2014 shows a staff installing a Jeep car model in an exhibition hall of the China International Exhibition Center , ahead of the “Auto China 2014” Beijing International Automotive Exhibition in Beijing. (Photo by AFP Photo)

Visitors crowd at the Mercedes Benz's exhibition booth on the first day of Auto China 2014 in Beijing April 20, 2014. Strong demand for new automobiles in China has laid the foundations for the next leg of business for carmakers BMW, Audi and Mercedes-Benz: the second-hand premium car market. (Photo by Jason Lee/Reuters)

A girl poses for a photo in a BMW X3 car on display at the China International Exhibition Center new venue during the “Auto China 2014” Beijing International Automotive Exhibition in Beijing on April 21, 2014. (Photo by AFP Photo)

An Infiniti Q30 concept car is displayed at Auto China 2014 in Beijing April 20, 2014. Global automakers are scrambling to meet the demands of China's young urban professionals, who want a car that makes them stand out, yet don't always have the money to splurge on a top-end model. (Photo by Jason Lee/Reuters)

Visitors gather to look at a GAC Fiat car on display at the “Auto China 2014” Beijing International Automotive Exhibition in Beijing on April 21, 2014. (Photo by AFP Photo)

Visitors gather to watch dancers perform next to GM Chevrolet Trax cars on display during the “Auto China 2014” Beijing International Automotive Exhibition in Beijing on April 21, 2014. (Photo by AFP Photo)

Visitors look at a Lincoln MKX car at Auto China 2014 in Beijing April 20, 2014. Ford Motor Co's premium brand Lincoln may be late to China's luxury boom, but its top executives say the upscale car market still has plenty of steam left for growth to make its debut later this year worthwhile. (Photo by Jason Lee/Reuters)

A model performs on the Toyota FV2 concept car during the 2014 Beijing International Automotive Exhibition at China International Exhibition Center on April 21, 2014 in Beijing, China. More than 2,000 automotive enterprises from 14 countries and regions participated in the 2014 Beijing International Automotive Exhibition from April 20 to April 29. (Photo by Feng Li/Getty Images)

A model poses with a Volvo concept car at Auto China 2014 in Beijing April 20, 2014. China is set to surpass the United States to become Volvo Car Group's biggest market in 2014 with sales of at least 80,000 cars in the world's largest auto market. (Photo by Jason Lee/Reuters)

A Volkswagen XL1 hybrid car is displayed at Auto China 2014 in Beijing, April 20, 2014. Volkswagen will keep expanding Chinese operations and start selling battery-powered cars in the biggest auto market as the country rewards electric-vehicle buyers to tackle air pollution. (Photo by Jason Lee/Reuters)

A model sits in a Lamborghini sport car as a potential consumer looks during the 2014 Beijing International Automotive Exhibition at China International Exhibition Center on April 21, 2014 in Beijing, China. (Photo by Feng Li/Getty Images)

A Bugatti vehicle is displayed during the 2014 Beijing International Automotive Exhibition at China International Exhibition Center on April 21, 2014 in Beijing, China. (Photo by Feng Li/Getty Images)

A model poses near Chinese SUV maker Great Wall Motors' Haval 8 displayed at the China Auto show held in Beijing, China, Sunday, April 20, 2014. Automakers are looking to China's biggest auto show this year to help boost sales in this huge but cooling market. (Photo by Ng Han Guan/AP Photo)

An Infiniti Q50 Eau Rouge concept car is displayed at Auto China 2014 in Beijing April 20, 2014. Global automakers are scrambling to meet the demands of China's young urban professionals, who want a car that makes them stand out, yet don't always have the money to splurge on a top-end model. (Photo by Jason Lee/Reuters)